Measures variations in natural electromagnetic fields (atmospheric electricity, etc.). A meter that detects small changes in natural DC fields and some radio transients. The TriField Natural EM Meter was designed to do field measurements pro special research. It detects changes in extremely weak static (DC or “natural”) electric and magnetic fields, and signals with both a tone and the movement of a needle-type gauge if either the electric or magnetic field changes from previous levels. A radio and microwave detector is also included, which reads radio power directly.
